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SonicSens 
Case Studies 
July 2013
Scottish Water, UK 
HWM have supplied and installed over 350x SonicSens 
for the Scottish Water Framework Directive. 
Unit...
Beijing Weather Bureau, China 
SonicSens monitors water levels in drains to 
measure the impact of rain on the city 
Deplo...
Chengdu Sewage, China 
Chengdu Sewage ordered a 
trial of SonicSens in July 
2011. 
SonicSens positioned in a 10 
meter pi...
Guangzhou City, China 
Guangzhou City originally piloted 4 
SonicSens to monitor water levels at 
strategic points along t...
JiNan City, China 
SonicSens was installed in Nov 2011 
When the chamber flooded, the logger 
continued sending data every...
Versatility of Installation 
At one CSO monitoring point, there was 
insufficient room to site the SonicSens in 
the origi...
For more information 
www.hwm-water.com 
sales@hwm-water.com 
+44 (0)1633 489479
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Sonicsens- case studies

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The SonicSens ultrasonic level or flow sensor is ideal for remote monitoring open channels, combined sewer overflows, storm drains, storage tank levels, and flood warning systems. SonicSens 2 builds on the success of the original unit and has been significantly enhanced to improve its communication functionality and ease of use.

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Sonicsens- case studies

  1. 1. SonicSens Case Studies July 2013
  2. 2. Scottish Water, UK HWM have supplied and installed over 350x SonicSens for the Scottish Water Framework Directive. Units have been deployed successfully throughout Scotland. Used extensively to monitor a wide variety of situations including: Siphon chambers CSO Overflow and storm tanks Weirs Reservoirs Compensation channels “The design team here are very happy with the performance of the instruments, and the SonicSens system has been used many times as a part of our award-winning Water Framework Directive contract” Gerard O’Hara, Project Engineer for Scottish Water
  3. 3. Beijing Weather Bureau, China SonicSens monitors water levels in drains to measure the impact of rain on the city Deployed upstream to monitor the effect of rainfall and alert to the possibility of flooding downstream 1 minute logging and reporting data every 5 minutes so that flood warnings and preventative action can be taken promptly in the event of rising water levels.
  4. 4. Chengdu Sewage, China Chengdu Sewage ordered a trial of SonicSens in July 2011. SonicSens positioned in a 10 meter pit with the LX logger and battery pack positioned at the top of the chamber Following the success of the trial, the company is now rolling out deployment across the network.
  5. 5. Guangzhou City, China Guangzhou City originally piloted 4 SonicSens to monitor water levels at strategic points along the river that crosses the city. Following their success, the company has ordered 100+ units to accurately monitor their waste water levels.
  6. 6. JiNan City, China SonicSens was installed in Nov 2011 When the chamber flooded, the logger continued sending data every 15 minutes even after the sensor head was completely submerged. When levels fell below the dead band the sensor automatically began transmitting again. A competitor tried to use their level measurement device in the chamber but was unable to get a signal out of the chamber. They drilled a hole into the chamber and filled it with glue to see if this would improve reception. The water company was surprised that the SonicSens antenna could get a signal out of the chamber easily as they had been told that this would be impossible.
  7. 7. Versatility of Installation At one CSO monitoring point, there was insufficient room to site the SonicSens in the original chamber. There was concern that the 300mm blanking distance would not be cleared if the water level were raised by a storm condition. In a creative workaround, the sensor unit was installed on its side, along with a reflector plate mounted at a 45 degree angle, situated far enough away to account for the dead-band. Although an uncommon situation, it is a simple and effective solution which highlights the versatility of SonicSens measurement technology. Scottish Water Installation Photograph
  8. 8. For more information www.hwm-water.com sales@hwm-water.com +44 (0)1633 489479

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